Scoring a safety is not the easiest thing to do. First, the ball has to be near the goal line, and then the quarterback or running back has to be tackled in the end zone. There are other ways to get a safety too that involve punt and kick returners, punters, and more. The main point is that it just doesn’t happen that often.
The most safeties ever scored in a season by a rookie is two.
In 1977, Jim Young of the Houston Oilers scored two safeties during his rookie season. Young was a defensive end out of Texas Southern University who came to the team as an undrafted free agent. After three seasons, he was out of football.
In 2008, Jameel McClain scored two safeties during his rookie season for the Baltimore Ravens. McClain was a linebacker who came to the team as an undrafted free agent from Syracuse University.
Only 17 players in the history of the NFL have been able to score two safeties in a season, it must’ve been a great feeling for those two men to do it as rookies.